Cummins ships Grid Code Compliant gensets

Lean-burn gas-powered generator sets meet Europe’s most stringent requirements for grid connection

14 January 2015 by Bill Boyle - DatacenterDynamics

Cummins ships Grid Code Compliant gensets
Cummins grid code compliant gas product

Cummins Power Generation has announced that some of its first generator sets compliant with the European grid codes have been delivered successfully to a customer in Germany. Such codes are being introduced across Europe to help improve the stability of today’s power grids, which have become reliant on renewable energy sources.

The generator sets are the result of 18 months of design and development by the Cummins plant in Manston, Kent, UK.

Compliance for generators that connect to the grid is already a legal requirement in Germany, with many other countries about to follow suit. Independent testing house DNV GL has validated the Cummins' 60-litre and 91-litre lean-burn gas generator set range as fully compliant with the grid code requirements of Germany, France and Italy.

Code compliance is the future
Transmission and distribution system operators in Europe are defining sets of rules that specify how grid-connected power sources must perform, including generator sets and their associated components. These rules, known as grid codes, require embedded generation schemes to stay connected to the grid during certain grid faults, unlike the traditional approach where generator sets could come off the grid.

Andrew Stone, Director of Global Project Companies, Cummins said: “We have proven expertise in delivering state-of-the-art products that meet our customers’ and markets’ requirements. With the growing demand to meet grid code requirements in Europe, the introduction of Cummins Grid Code Compliant products means power providers can continue to rely on us for their generator set needs.”

Design and development
In order to define the requirements products needed to meet, Cummins Power Generation first studied variations in the grid code requirements across various network operators and countries. This allowed the design of generator set components that could meet the significant electrical and mechanical stresses encountered during grid faults. Computer-aided design tools were used to determine the stresses on the components and enabled designs to be optimised for the products’ expected lifetime.

After the design was finalised, the generator sets underwent testing in parallel with the live UK National Grid, using a grid fault simulation device to create a localised fault. Results of the physical tests were then used to validate a mathematical model, which could predict the performance of any Cummins lean-burn gas-powered generator set in the event of a low-voltage grid fault. Mathematical modelling enables quicker, more efficient development, lowering the company’s carbon footprint today and for the future.

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